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5G

5G Flexible Transceiver for Physical Layer Evaluation

Basic overview The aim of this proposal is to extend the flexible PHY software component made available by the eWINE project with MIMO technologies. The goal is to utilize the second independent RF chain of the USRP SDR to employ Alamouti space-time coding (STC) combined with GFDM. This technique, firstly introduced for OFDM based wireless […]

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5G

5G physical layer specifications

The 5G specifications have been published as the 3GPP 38 series. Here we look at the physical layer specifications. 38.211: Physical channels and modulation The scope is to establish the characteristics of the Layer-1 physical channels, generation of physical layer signals and modulation, and to specify: Definition of the uplink and doecewnlink physical channels Frame structure […]

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5G Academic

5G New Radio Self-introduction

3GPP http://www.3gpp.org/ What is the 3GPP standard 5G why organizations cannot do without it?  Time flies, blink of an eye to 2017, from its inception in 1998, 3GPP continues to expand, driven by the members, involve a lot of work and hundreds of companies Collaboration, including network operators, terminal manufacturers, chip manufacturers, infrastructure manufacturers, academia, […]

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5G Academic

Link Level (LL) Simulation vs System Level (SL) Simulation

In the development and standardization of LTE, as well as in the implementation process of equipment manufacturers, simulations are necessary to test and optimize algorithms and procedures. This has to be carried out on the physical layer (link level) and in the network (system level) context: Link level simulations LL simulations allow for the investigation […]

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5G

How 5G reduces data transmission latency

One of the essential requirements in 5G wireless systems is minimizing packet transmission latency for ultra-reliable and low latency (URLLC) services. One of the most prominent examples will be vehicle-to-everything (V2X) communications. V2X certainly includes reaching vehicles with broadband services, but latency isn’t an issue there. Low latency in cellular networks is a prerequisite for […]

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5G

Introduction to Latency towards 5G

In developing wireless 5G standards, we have an opportunity to further reduce latency, the time delays, in future wireless networks.  In fact, there appears to be unanimous opinion that 5G standards should have less than 1 millisecond (msec) of latency.[1],[2],[3],[4] But why? In considering results from neurology and studies of interactive games, and in considering the […]

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5G

5G new technology aspects

The total download capacity for a single 5G mobile cell must be at least 20Gbps, the International Telecommunication Union (ITU) has decided. In contrast, the peak data rate for current LTE cells is about 1Gbps. The incoming 5G standard must also support up to 1 million connected devices per square kilometre, and the standard will […]

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5G

5G channel coding

Polar codes, a class of codes which allows to 1. attain the capacity of all symmetric memoryless channels (=those for which the capacity is attained for a uniform input distribution), 2. with an encoding algorithm of complexity O(N log N) (N = code length), 3. with a decoding algorithm of complexity O(N log N). This […]

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5G

Wireless Networking basic concepts and understanding

Introduction As the basis for understanding the installation, operation, and troubleshooting of wireless LANs (WLANs), it is important that you have a good knowledge of how radio waves propagate through an environment. Every Wi-Fi deployment requires that the systems engineer understand the fundamentals of how radio waves move and react within the environment. For example, […]

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5G

Frame Error Rate vs Bit Error Rate

There are multiple ways in which the quality of networking products can be assessed. Two clearly defined techniques are the measurement of bit error rate (BER) and frame error rate (FER). Many networking products are specified with the bit error rate that they achieve or support. BER is simply the ratio of bits that have […]